Concrete Drainage Ditch

[CTor46]

We have a drainage concrete drainage ditch approximately 10 ft wide that slopes down to about 6 feet deep that cuts across holes 1 and 5 at our local golf course.  The drainage ditch on the right side of hole 5 has heavy brush/trees growing out of it probably 20 feet high.  Would that still be a free drop?  The other drainage ditch areas are just concrete.

[iacas]

Two ways it's likely to go:

• The course could call the whole area a penalty area, and you'd have to follow those rules.
• If they didn't do the first, the concrete is almost surely an immovable obstruction, so relief would be available for the lie, area of swing, and stance.

I'd wager, knowing nothing more than what you said above, that it's the second.